As always, your mechanic did an excellent job! I brought the Mazda in a little after 9:30 a.m., and by 10:15 a.m. he had completed the lube, oil, and filter change. I also appreciated your recommendation to replace the Duralast battery (which was installed on Oct. 3, 2006) in the very near future. As you indicated in your Invoice #8582, dated Oct. 16, 2012, the remaining battery life was only 20% of the recommended cold cranking amps. Currently, the battery has less than 570 cold cranking amps of its 725 cranking amps. I will definitely consider your offer to replace the Duralast with a 6-year battery, 30 month free replacement, at the cost of $117.